Thread-cutter for weft-replenishing looms.



No. 872,471. PATENTED DEC]. 3, 1907.

E. S. STIMPSON.

THREAD CUTTER FOR WEFT REPLENIS HING LOO MS. APPLICATION FILED JUNE 28.1906.

3 SHEETS-SHEET 1.

PATENTED DEC. 3, 1907. B. s. STIMPSON. THREAD CUTTER FOR WEPT REPLENIS'HING LOOMS.

APPLICATION FILED JUNE 28.1906.

Inventor iuhbf/ f witwneeses WLMIXLQL No. 872,471. PATENTED mm, 1907. E. s. STIMPSON.

THREAD CUTTER PO EFT RB-PLENISHING LOOMS.

APPLIOAT FILED JUNE 28.1906.

3 SHEETSSHBBT 3.

FEGA.

EDWARD s. STIMPSON, oi? HOPEDALE,MASSACHUSETTS, ASSIGNOR o DRAPER COMPANY,

on PORTLAND, MAINE, AND HOPEDALE, MASSACHUSETTS, A CORPORATION or MAINE.

THBEAD-CTITTER FOR WEFT-REPLENISHING LOOMS.

-l\To. 872,471.

To all whom it may concern:

Be it known that I, EDWARD S. Srnurson,

of Hopedale, in the county of Worcester and State of'Massachusetts, have invented certain new and useful Improvements in Thread- Cutters for Automatic Weft-Replemslnng Looms,fof which the following is a specifi cation.

In automatic weft replenishing looms wherein weft is replenished prior to the complete exhaustion of the running weft, the outgoing weft-carrier still has weft on it which spent weft quickly and certainly.

The present mechanism is illustrated in the accompanying drawings, in. which-' Figure 1, isja plan view of so much of an automatic weft replenishingloom as is necessary'for an understanding of the present invention. Fig. 2, is a vertical section of the loom. Fig. 3, is adetail of the spent wef cutter. Fig. 4, is a vertical section illustrating the action fof the spent weft-catcher. Fig. 5, is a plan 'view of the spent weft-cutter,

is the breast-beam of the loom B, is

A .the lay; C, is the shuttle and D is the reciprocating temple at the change side of. the loom which carries the thread-cutter for the fresh Weft, said cutter. being indicated at There is also shown in the drawings a usual starting-shaft F, which is rocked When the'weft is to be replenished and by its rockin brings into action the weft-replenishing mec ianism.

' Certain usual parts are shown in connection with this starting-shaft. It is shown in Fig. 2, as provided with an arm a, which is opera tively connected in a well-known way with the usual shuttle feeler partly shown at G, and with a restoring-spring H. The shuttle feeler G, swin s on pivot stud i), and it carries an arm 0, see Fig. 1) which immediately controls a stud d, on the usual transferrer dog which governs the transferrer and hence the replenishment of weft. This stud (Z, sufficiently indicates the weft-replenishing mechanism. Associated With these known parts are the'parts which constitute the pres? ent improvement.

Specification of Letters Patent. 7 Application fileii June 28. 1906. Serial No.323.803

I The spent weft-cutter is located between re ested Dec. 3, 1907.

the temple and the selvage held by it and. the

shuttle box at the change end of the lay, and a'cts upon the spent weftrclose to the plane of .the point ofithe shuttle when occupying the shuttle-box at the change end'of the lay. It is composed of a stationary blade/I, and a movable blade J. Both of these blades are married by a stationary part of the loom in front of the lay. The movable blade has a ldepending fin er 6, and the two blades are cl apart as i lustrated in Fig. 3, by means of a spring f, interposed between this finger and a fixed socket. The movable blade is moved to close and'cut any thread located between it and the stationary blade bythe lay, or a partcarried thereby, strikin the finger c. Any other means can be emp oyed for closing the movable blade as the loom operates. It is convenient, however, to have the closing movement effected by the lay or a part carried thereby. The movable blade swings on a fixed pivot stud 9, (see Fi 5),

and a spring h, mamtainsthe movable hide in cutting contact with the fixed blade I.

. This spent Weft-cutter is forward of the path ofthe weft extending from the adj acenu selvage to the adjacent shuttle-box so that it cannot cut the running weft. In order thatit may cut thespent weft, a thread catcher and carrier K, is employed, which erforms its functional movements only w en the weft replenishing mechanism acts. This thread catcher andcarrier K, is supported at its forward end upon a fixed horizontal rod L,

said rod and of the thread and a spring M, surroundin acting upon the forward en catcher andcarrier, maintains said thread catcher and carrier normally in its forward position out of reach of the runningweft.

he connection between the 'thread catcher and carrier and the rod L is a loose one, per mitting the thread catcher and.carrier to swing freely up "and down. The thread catcher andcarrier is en orted at its middle upon an actuator N us actuator has a bowl t, upon" which the thread catcher and carrier rests, said thread catcher and carrier having an open mouthed recess m, for this purpose. The actuator N, is pivoted at i,

and it has an elongated slot 0, into which 811-:

ters a stud P, carried by a crank arm which is fast on the hub of the shuttle feeler GI The lay B, has a recess R, in line with the thread catcher and carrier, this recess being lit) open at the top and extending below the raceway of the lay. This recess extends the entire width of'the lay. Back of this recess the lay carries a releasing cam S, which is adapted to act upon the rear end of the-thread catcher the two arms forming between them and above the body of the thread catcher and c2 war a triangular recess open atits upper real: part. Normally, the actuator N, occupies the position shown in F ig. 2, being held therein by the spring H, and with its upper endresting against the breast-beam.

When the condition of the running weft demands replenishment, the starting-shaft F is rocked, elevating the arm a, and therebv swinging the shuttle feeler G, toward the then approaching lay. This movement of the shuttle feeler carries with it the attached crank arm Q, which through its stud P, acting in the slot 0, of the actuator N, swings said actuator rearwardly to the position shown' in F ig. 4. This mov ment of the actuator carries the thread catcher and carrier K, backwardly to the position shown in Fig. 4, and puts the spring M, under com pression. As the result of the relative approach of the la and of the thread catcher and carrier the rear end of said thread catcher and carrier enters the recess R, of the lay and in so doing the rear end of the thread catcher and carrier is carried beneath the spent weft and said weft occupies the triangular recess constituted by the catch T, and guard U. As the lay continues its forward movelr'ient, the releasing cam S, encounters the rear end of the thread catcher and carrier is indicated in Fig. 4. Still further forward movement of the lay lifts the rear end of the thread catcher and carrier so that the spent weft is caught by the catch T; and this elevation of the thread catcher and carrier continues until it is entirely freed from the bowl 1', of the actuator, whereupon the sprin M, almost instantaneously, restores the thread catcher and carrier to its original forward position. This forward movement of the thread catcher and carrier is more rapid than the forward movement of the lay so that the thread'catcher and carrier brings the spent weft between the still open blades of the spent weft-cutter before the lay strikes the fin er (1, of the movable blade. The spent we t being thus in position between the two blades, the cutter is actuated by the lay and the thread is cut. The spent weft is out approximately as the lay is at front center at which time the transferrer acts to discharge the spent weft-carrier and insert a fresh one. As the spent weft is then cut, the spent weftcarrier in its discharge carries with it the side ofthe loom. and the adjacent temple,

thread still held by a. when the weft-re- The stand W, which carries the spent I weft-cutter has an elastic spring guard X, which overhangs the thread catcher and carrier K, (see Fig. 1) so as to afford a yielding surface to limit the upward movement-of the thread catcher and carrier when it is thrown upwardly by the cam S.

A thread guide V, adjacent the fixed'cutting blade (see Figs. 3, and 5), insures the entrance of the spent weft between the two cutting blades. 'Also, a thread guide Z, (see Figs. 1, and 2,) is carried by the temple D, so that the spent weft may not-'be' carried above the temple by the action of the thread catcher and carrier. This leaves the end-of the spent-weft adjacent the temple in position to be out close to the selvage by the usual temple thread-cutter E, the primary office of which is,to cut the fresh weft.

The thread catcher and'earrier lies close to the stand W, and hence when it returns to its forward position the thread carried by it is caught between it and the stand, so that the thread is properly held to be cut by the temple thread cutter E. The short end of thread then held is dropped at the next reciproeation of the thread catcher and carrier. l claim as my invention:

1. An automatic weft-replenishing loom in which the weft is replenished before com plete exhaustion having, in combination, a spent weft-cutter mounted. on a stationary part of the loom. in front of the lay, said cutter having a movable blade which is actuated regularly during the runni of the, loom, and means for bringing a we t thread ektending from the adjacent selva e to the adjacent shuttle-box within reach 0 the said cutter, said n'eans being brought into action when the weft-replenishing mechanism is brought into action.

2. An automatic weft-re lcnishing loom in which the weft is replenis led before complete exhaustion having, in combination, a spent weft-cutter mounted on a stationary part of the loom in front of the lay and between the shuttle box at the replenishing said cutter having a movable blade whic is actuated regularly during the running, of the loom, and means for bringing a weft thread extending fIOIl'l the adjacent selvage to the adjacent shuttle-box within reach. of the spent weft-cutter.

3. An automatic weft-re lenishing loom in which the weft is replenis ed before complete exhaustion having, in combination, a spent weft-cutter mounted on a stationary A plete exhaustion having, in combination a for the spent-weft mounted on a stationary .selvage to the adjacent shuttle-box within .lete exhaustion, having, in combination, a

spent weft-cutterv mounted on a stationary part of. the loom in front of the lay and adapted to cut the spent weft close to the plane of the point of theshuttle when occupying the shuttle box at the change end of the lay, and means located between said cutter and the adjacent selvage for bringing a weft thread extending from the adjacent reach of said cutter.

5. An automatic weft-replenishing loom in which the weft is replenished before complete-exhaustion, having, in combination, a cutter for the fresh weft, and a second cutter part of the loom in front of-the lay, and means for bringing a weft thread extending from the adjacent selvage to the adjacent shuttle-box within reach of said second cutter.

6. An automatic weft-replenishing loom in'which the weft is replenished before coniay having a recess below the raceway; a spent weft thread-cutter mounted upon a stationary-part of the loom in front of the lay and between the adjacent selvage of the cloth and the shuttle-box at the change side of the: loom, said thread-cutter comprising a movable blade whi'chis positively actuated b the lay regularly during the running of the loom a normallylstationary thread catcher and carrier in front of the lay and in 1 line with said lay-recess, having means for catching the spent weft; a cam carried by l the lay back of said recess for acting on the rear end of the'thread catcher and carrier i an actuator for said thread catcher and cari ri'erlwhich is brought into action at the time. that the weft replenishing mechanism is brought into action, said actuator acting to movie the thread catcher and carrierlrearwardly toward the approaching lay, said thread catcher and carrier then entering the recess of the lay and being encountered by the cam on said lay, whereupon it is released from the actuator; and a spring acting on said thread catcher and carrier to throw 1t quickly forward when released from the acfuatorby the cam on the lay. .1

7. An automatic weft-replenishing loom in which the weft is replenished before complete exhaustion, having, in'combination, a spent weft thread-cutter mounted upon a stationary part of the 100111 in front of the 'lay and between the adjacent selvage of the cloth and the shuttle-box at the change side.

of the loom; a normally stationarythread catcher and carrier in front of the lay having means forcatching the spent weft; an actu ator for said thread catcher and earner which isbrought into action at the time that the weft-replenishing mechanism 1s brought into action as the result of the approaching exhaustion of the running weft, said actuator acting to move the thread-catcher andcarrier rearwardly toward the approaching la to catch the spent weft and means acting on said thread catcher and carrier to throw it forward ahead of the lay and to bring the caught thread within the sphere of action of said cutter. I

8. An automatic weft-replenishing loom in which the weft isreplenished before complete exhaustion having, in combination, a spent weft-cutter having a movable blade which is actuated regularly during the run ning of the loom, and a thread catcher and carrier which brings a weft thread extending from the adjacent selvage to the adjacent shuttle box within reach of said cutter. i In witness whereof, I'have hereunto signed my name in the witnesses. I I

EDWARD S. STIMPSON.

Witnesses:

Gnonoic OTIS DRAPER, ()uvnn H. LANE.

presence of two subscribing 

